The invention discloses an end-to-end image
lossless compression method based on two-dimensional inseparable
wavelet transform. According to the method, the image is decomposed through multistage
wavelet transform, and sub-band coefficients of different sizes are obtained. And inputting the coefficients into an entropy coding model, and using a
context model to drive an
arithmetic encoder to compress the coefficients into a bit
stream. According to the method, two-dimensional inseparable
wavelet transformation is adopted, a lifting structure of the wavelet transformation is used, three prediction filters and an updating filter are included, and the filter structure is a
convolutional neural network structure. The entropy coding module also uses a neural
network structure. Carrying out the overall optimization of all parameters through
deep learning, training the network until convergence, and achieving the
lossless compression of an image through a trained model. The end-to-end image
lossless compression method shows excellent performance in the aspect of lossless compression, is remarkably improved compared with a traditional
JPEG2000 lossless
compression method, and is also superior to an end-to-end image lossless
compression method based on traditional separable
wavelet transform.